By now in his early 20s, this appears to have been The Monster of Florence‘s third officially recognised pair of murders:
Victim 5, Giovanni Foggi (30), and victim 6, Carmela Di Nuccio (21) were murdered on 6 June 1981.

By now a teenager, this appears to have been The Monster of Florence‘s second pair of murders:
Victim 3, Pasquale Gentilcore (19), and victim 4, Stefania Pettini (18) were murdered on 15 September 1974.

Knee high to a grasshopper, this appears to have been The Monster of Florence‘s first pair of murders:
Victim 1, Antonio Lo Bianco (29), and victim 2, Barbara Locci (32), were murdered on 21-22 August 1968.